How to enable shortcuts for the Node Wrangler add-on on macbook?
Try disableing it and then re-enable it. Do restart in method. 
i'm using MAC and it never showed me any error. It worked smoothly. 

just pressed Ctrl+Shift and click on any node. 

What is appearing in "Quick Access" in "N" menu under "Node Wrangler" options, in your Blender Node Editor.